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Immediate Constituents analysis

The theory of Immediate Constituents (IC) was originally elaborated as an attempt to determine the ways in which lexical units are relevantly related to one another. The fundamental aim of IC analysis is to segment a set of lexical units into two maximally independent sequences or ICs thus revealing the hierarchical structure of this set (e.g. the word-group a black dress in severe styleis divided intoa black dress / in severe style.Successive segmentation results in Ultimate Constituents (UC) - two-facet units that cannot be segmented into smaller units having both sound-form and meaning (e.g. a | black | dress | in | severe | style).

The meaning of the sentence, word-group, etc. and the IC binary segmentation are interdependent (e.g. fat major’s wifemay mean that either ‘the major is fat’ (fat major’s | wife) or ‘his wife is fat’ (fat | major’s wife).

The Immediate Constituent analysis is mainly applied in lexicological investigation to find out the derivational structure of lexical units (e.g. to denationalise => de | nationalise (it’s a prefixal derivative, because there is no such sound-forms as *denation or *denational). There are also numerous cases when identical morphemic structure of different words is insufficient proof of the identical pattern of their derivative structure which can be revealed only by IC analysis (e.g. words which contain two root-morphemes and one derivational morpheme - snow-coveredwhich is a compound consisting of two stems snow + covered, but blue-eyedis a suffixal derivative (blue+eye)+-ed). It may be inferred from the examples above that ICs represent the word-formation structure while the UCs show the morphemic structure of polymorphic words.

2. Characteristic features of learner’s dictionaries

Traditionally the term learner’s dictionaries is confined to dictionaries specifically complied to meet the demands of the learners for whom English is not their mother tongue. They nay be classified in accordance with different principles, the main are: 1) the scope of the word-list, and 2) the nature of the information afforded. Depending on that, learner’s dictionaries are usually divided into: a) elementary/basic/pre-intermediate; b) intermediate; c) upper-intermediate/advancedlearner’s dictionaries.

1. The scope of the word-list. Pre-intermediate as well as intermediate learner’s dictionaries contain only the most essential and important – key words of English, whereas upper-intermediate learner’s dictionaries contain lexical units that the prospective user may need.

Purpose: to dive information on what is currently accepted in modern English. Excluded: archaic and dialectal words, technical and scientific terms, substandard words and phrases. Included: colloquial and slang words, foreign words – if they are of sort to be met in reading or conversation. (frequency)

2. The nature of the information afforded. They may be divided into two groups: 1) learner’s dictionary proper (those giving equal attention to the words semantic characteristics and the way it is used in speech); 2) those presenting different aspects of the vocabulary: dictionaries of collocations, derivational dictionaries (word-structure), dictionaries of synonyms and antonyms and some others.



Pre-intermediate and intermediate learner’s dictionaries differ from advanced sometimes greatly in the number of meanings given and the language used for the description of these meanings.

Pictorial material is widely used. Pictures may define the meanings of different nouns as well as adjectives, verbs, and adverbs. The order of arrangement of meaning is empiric (beginning with the main meaning to minor ones).

The supplementary material in learner’s dictionaries may include lists of irregular verbs, common abbreviations, geographic names, special signs and symbols used in various branches of science, tables of weights and measures and so on.

 

 


Date: 2016-01-14; view: 2673


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